Brick-molding machine



' Sept. 23, 192

J. T. POKQRNY BRICK MOLDING MACHINE Filed Feb. 4

Patented Sept. 23, 1%24.

UNETE sra'rss earsarosriee.

JAMES T. POKORNY,OF CEDAR BAYOU, TEXAS, ASSIG-NOR OF ONE-HALF TO A I. EDDINGSTON, 0F PORT ARTHUR, TEXAS.

BRiCK-MOLDING MACHINE.

Application filed. February 4, 1921. Serial No. 442,573.

To all whom it may concern:

Be it known that 1, JAMES T. POKORNY, a citizen of the United States, residing at Cedar Bayou, in the county of Harris and State of Texas, have invented certainnew and useful Improvements in a Brick-Molding Machine, of which the following is a specification. g

This invention relates to new and useful improvements in a brick molding machine.

One object of the invention is to provide a machine of the character describedwhich is formed with endless aprons spaced apart, one of which carries the molds, and between which the clay to be molded passes, said clay being thereby molded and compressed into brick of unifor1n-density and dimensions.

Another object of the invention is to provide a device of the character described, one of the molding belts of which may be ad justed toward and from the other to regulate the density of the brick.

With the above and other objects in view the invention has particularrelation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specifica tion and illustrated in the accompanying drawings, wherein Figure 1 shows a vertical sectional view of the device.

Figure 2 shows a plan view.

Figure 3 shows a transverse sectional view taken on the line 33.of Figure 1.

Figure 4 shows a fragmentary edge view of the mold-carrying belt, and Figure 5 shows a modified form of roller which may be used.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numerals 1, l designate the lower side plates. These plates are secured to the inner sides of the supporting legs 2, 2, five.

pairs of said le 's being shown, although any desired number may be used. The ends of the plates 1 are widened and formed with elongated slots as 8, 3 and fixed to the said ends are the beari gs 4, 4 in whi the shafts o, 5 rotate. Fixed upon these respective shafts are the rollers 6, 6 over which the endless, mold-carrying belt 7 operates. The

bearings 4; are adjustable so that the tension on the belt 7 may be varied as rehave widened ends with the long slots 3',

3, similar to the slots 3, 3, and secured to said ends are the bearings 4, 4 inwhich the shafts 5 rotate, said shafts 5 and 5 extending through said slots. Mounted upon the shafts 5 are the rollers 6, 6 over which the endless compression belt 7 operates and the bearings 4c are adjustable to permit the variation of the tension belt 7 This belt operates over a series of rollers 8, said rollers having central shafts which have end bearings in the side plates 10. The upper plates 10 are supported above the lower plates by bein secured to the upwardly extended ends of the legs 2. These plates 10 are adjustably secured to said legs, as shown in Figure 1, so that they may be adjusted toward and from the lower side plates. The belts 7 and 7 are wide enough to cover the plates 1 and 10. respectively, and they converge from the feed end toward the discharge end and for a distance at the discharge end they travel parallel.

In order to confine the clay between the belts, I have provided the side boards 11, 11. These side boards fit between the edges of the belts and are in alignment with the respective plates 1 and 10 on each side and they are bolted to the respective legs 2. These side boards are held spaced slightly from the belts to permit the latter to travel freely and they form the endsof the molds 12, hereinafter to be described. and which are fixed upon the belt 7.

These molds are arranged transversely on the belt 7 and are secured thereto adjacent each other. Each mold is right angular in cross sectional contour, consisting of a bottom plate whose forward edge is upturned forming a retaining flange. These molds are formed of steel or other slightly flexible metal and the upturned flange of one mold fits closely against the edge of the adjacent mold, opposite the upturned edge thereof. As before stated, the side boards 11 form the ends of said molds.

shown in Figure 1.

, by the numeral 13.

The clay to be formed is fed onto the feed end of the belt 7, which extends out beyond the corresponding end of the belt 7, as The belts are driven. in" any suitable manner, in the direction of the arrows in Figure 1 and the clay is compressed by the converging belts into the molds. As before stated, the discharge ends of the belts run parallel for a distance and the upturned flanges of the molds are high enough to reach from the belt 7 to the belt 7 and thus completely sever the brick from each other. As the molds pass around the roller 6 at the discharge end, the up turned flanges forming the sides of the molds, will be moved apart and the bottom of each mold will become slightly curved thus loosening the brick from the molds and causing their easy discharge. The brick thus delivered will be of uniform dimensions and density and will be ready for delivery into the kiln for burning.

It maybe found, in some cases, that the rollers 6 underneath which the discharge end of the mould-carrying belt 7 operates, will be too far apart so that the pressure will cause the bottom plates of the moulds to curve, thus deforming the brick. In order to avoid this I have provided the form of roller shown in Figure 5 and designated 'lhese rollers have the annular ribs 1% and the intervening annular grooves 15. The ribs and grooves of each roller are staggered with relation to the adjacent rollers so that said ribs and grooves will 'intermesh, as illustrated in said figure.

said moulds from being distorted by the pressure out of their normal form, thus preventing any distortion or irregularity in form of the bricks.

What I claim is I 1. In a molding machine, an endless belt, rollers over which the same operates, a series of molds carried by said belt, said rollers having peripheral. ribsand grooves, the ribs of each roller fitting into the grooves of adjacent rollers. I

2. In a molding machine, an endless belt, rollers over which the same operates and a series of molds carried by said belt, and formed of slightly flexible material.

3. In a clay molding machine an endless belt, molds carried thereby, each mold being right angular in cross sectional contour and consisting of a bottom plate one end of which is upturned, said molds being adjacent on the belt and being formed of slightly flexible material.

at. In a molding machine, an endless belt, supporting rollers over which the same operates and a'series of molds carried by said belt, and whose bottoms are formed of slightly flexible material.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES T. POKORNY.

Witnesses: y

R. M. SMITH, E. V. HARDWAY. 

